Bodies and Systems Crossword Puzzle

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Across
  1. 3. covers the entire body as skin
  2. 4. tube connecting to the lungs
  3. 6. fill with air when you inhale
  4. 8. joins bones to bones at joint
  5. 12. the system that is responsible for taking in oxygen and expelling carbon dioxide
  6. 13. involved in movement
  7. 14. tiny hair like structure that protects the respiratory system
  8. 15. tiny air sacs that exchange oxygen and carbon dioxide
  9. 17. vessels tubes through which blood travels
  10. 18. senses stimuli from the outside environment
  11. 19. the system that is responsible for the movement of the human body
  12. 20. collections of many of the same type of cell come together to form tissues
  13. 21. pumps blood to the body and lungs
Down
  1. 1. connects and holds together structures in the body
  2. 2. the system that is responsible for circulating blood through the body
  3. 5. split tube going from trachea to each lung
  4. 7. the system that is responsible for support movement, protection, and blood circulation
  5. 9. inside of large bones make blood cells
  6. 10. cushions and protects the ends of bones
  7. 11. joins muscles to bones
  8. 16. allows air in and out